Introduction to OWASP Web Application Testing 3
OWASP Top 10 Vulnerabilities 3
1.INJECTION 5
SQL Injection 5
What is SQL injection (SQLi)? 5
Types of Injection Attacks 9
Mitigation Techniques 10
How SQL Injection Works 10
Tools for Finding and Testing Injection Vulnerabilities 10
Steps to Perform SQL Injection (for Educational Purposes): 11
SQL Injection Vulnerability Scanner Tool's : 11
Generic SQL Injection Payloads 12
Generic Error Based Payloads 14
Generic Time Based SQL Injection Payloads 18
Generic Union Select Payloads 20
SQL Injection Auth Bypass Payloads 42
2.Broken Authentication 45
Common Issues in Broken Authentication 45
Mitigation Strategies 46
Tools for Finding and Testing Broken Authentication 47
Steps for Testing Broken Authentication 48
3.Sensitive Data Exposure 49
Common Issues Leading to Sensitive Data Exposure 49
Mitigation Strategies 50
Tools for Finding and Testing Sensitive Data Exposure 50
4. XML External Entities (XXE) 52
How XXE Works 52
Types of Attacks Enabled by XXE 52
Mitigation Strategies 54
Tools for Finding and Testing XXE 55
5.Broken Access Control 58
Common Issues Leading to Broken Access Control 58
Mitigation Strategies 59
Tools for Finding and Testing Broken Access Control 59
6.Security Misconfiguration 61
Common Issues Leading to Security Misconfiguration 61
Mitigation Strategies 62
Tools for Finding and Testing Security Misconfigurations 63
7.Cross-Site Scripting (XSS) 64
, Types of XSS Attacks 64
Common Vectors for XSS 64
Mitigation Strategies 65
Tools for Finding and Testing XSS Vulnerabilities 66
8.Insecure Deserialization 128
How Insecure Deserialization Works 128
Common Risks and Impacts 128
Mitigation Strategies 129
Tools for Finding and Testing Insecure Deserialization 130
9.Using Components with Known Vulnerabilities 131
How Vulnerabilities in Components are Exploited 131
Common Risks and Impacts 131
Mitigation Strategies 132
Tools for Finding and Testing Vulnerabilities in Components 133
10.Insufficient Logging & Monitoring 135
Key Components of Logging & Monitoring 135
Risks and Impacts of Insufficient Logging & Monitoring 135
Mitigation Strategies 136
Tools for Logging and Monitoring 137
, The Open Web Application Security
Project (OWASP)
OWASP (Open Web Application Security Project) provides a comprehensive framework
for web application security testing. Here’s an overview and some essential points for
conducting OWASP web application testing:
Introduction to OWASP Web Application Testing
OWASP is a non-profit organization focused on improving the security of software. The
OWASP Testing Guide is a key resource for understanding how to test web applications
for security vulnerabilities.
OWASP Top 10 Vulnerabilities
OWASP periodically publishes a list of the top 10 most critical web application security
risks. Here’s a summary of the OWASP Top 10, which should be the primary focus
during web application testing:
1. Injection: SQL, NoSQL, OS, and LDAP injection vulnerabilities.
2. Broken Authentication: Issues with authentication and session management.
3. Sensitive Data Exposure: Inadequate protection of sensitive data.
4. XML External Entities (XXE): Vulnerabilities related to XML processing.
5. Broken Access Control: Flaws in access control mechanisms.
6. Security Misconfiguration: Incorrectly configured security settings.
7. Cross-Site Scripting (XSS): Injection of malicious scripts.
8. Insecure Deserialization: Risks associated with deserializing untrusted data.
9. Using Components with Known Vulnerabilities: Dependence on vulnerable
components.
10. Insufficient Logging and Monitoring: Inadequate logging and monitoring
mechanisms.
, The OWASP Top 10 is a list of the top 10 most critical web application security risks
identified by the Open Web Application Security Project (OWASP).
1. Injection: Injection flaws, such as SQL, NoSQL, OS, and LDAP injection, occur
when untrusted data is sent to an interpreter as part of a command or query. This
can result in unauthorized access, data loss, or complete host takeover.
2. Broken Authentication: This includes issues such as improper authentication
mechanisms, weak passwords, and session management vulnerabilities that can
allow attackers to compromise user accounts and gain unauthorized access.
3. Sensitive Data Exposure: Applications that fail to properly protect sensitive data
(e.g., financial information, credentials) through encryption, hashing, or adequate
access controls are vulnerable to exposure and theft.
4. XML External Entities (XXE): XXE vulnerabilities arise when an application
processes XML input that contains external entity references in an unsafe
manner. Attackers can exploit this to disclose confidential data, execute remote
code, or perform server-side request forgery (SSRF) attacks.
5. Broken Access Control: Inadequate access control mechanisms can allow
unauthorized users to access functionality or data, such as administrative
functions, sensitive files, or other users' data.
6. Security Misconfiguration: Security misconfigurations, such as default
configurations, unnecessary features enabled, or missing patches, can expose
vulnerabilities that attackers can exploit to gain unauthorized access or disrupt
services.
7. Cross-Site Scripting (XSS): XSS vulnerabilities occur when an application
includes untrusted data in a web page without proper validation or escaping.
Attackers can use XSS to execute malicious scripts in users' browsers, steal
session cookies, or deface websites.
8. Insecure Deserialization: Insecure deserialization vulnerabilities can lead to
remote code execution or privilege escalation. Attackers can manipulate
serialized objects to execute arbitrary code or perform denial-of-service (DoS)
attacks.
9. Using Components with Known Vulnerabilities: Using outdated or vulnerable
components, such as libraries, frameworks, or plugins, can expose applications
to known security flaws that attackers can exploit.
10. Insufficient Logging & Monitoring: Inadequate logging and monitoring make it
difficult to detect and respond to security incidents, such as attacks or
unauthorized access attempts, in a timely manner.
OWASP Top 10 Vulnerabilities 3
1.INJECTION 5
SQL Injection 5
What is SQL injection (SQLi)? 5
Types of Injection Attacks 9
Mitigation Techniques 10
How SQL Injection Works 10
Tools for Finding and Testing Injection Vulnerabilities 10
Steps to Perform SQL Injection (for Educational Purposes): 11
SQL Injection Vulnerability Scanner Tool's : 11
Generic SQL Injection Payloads 12
Generic Error Based Payloads 14
Generic Time Based SQL Injection Payloads 18
Generic Union Select Payloads 20
SQL Injection Auth Bypass Payloads 42
2.Broken Authentication 45
Common Issues in Broken Authentication 45
Mitigation Strategies 46
Tools for Finding and Testing Broken Authentication 47
Steps for Testing Broken Authentication 48
3.Sensitive Data Exposure 49
Common Issues Leading to Sensitive Data Exposure 49
Mitigation Strategies 50
Tools for Finding and Testing Sensitive Data Exposure 50
4. XML External Entities (XXE) 52
How XXE Works 52
Types of Attacks Enabled by XXE 52
Mitigation Strategies 54
Tools for Finding and Testing XXE 55
5.Broken Access Control 58
Common Issues Leading to Broken Access Control 58
Mitigation Strategies 59
Tools for Finding and Testing Broken Access Control 59
6.Security Misconfiguration 61
Common Issues Leading to Security Misconfiguration 61
Mitigation Strategies 62
Tools for Finding and Testing Security Misconfigurations 63
7.Cross-Site Scripting (XSS) 64
, Types of XSS Attacks 64
Common Vectors for XSS 64
Mitigation Strategies 65
Tools for Finding and Testing XSS Vulnerabilities 66
8.Insecure Deserialization 128
How Insecure Deserialization Works 128
Common Risks and Impacts 128
Mitigation Strategies 129
Tools for Finding and Testing Insecure Deserialization 130
9.Using Components with Known Vulnerabilities 131
How Vulnerabilities in Components are Exploited 131
Common Risks and Impacts 131
Mitigation Strategies 132
Tools for Finding and Testing Vulnerabilities in Components 133
10.Insufficient Logging & Monitoring 135
Key Components of Logging & Monitoring 135
Risks and Impacts of Insufficient Logging & Monitoring 135
Mitigation Strategies 136
Tools for Logging and Monitoring 137
, The Open Web Application Security
Project (OWASP)
OWASP (Open Web Application Security Project) provides a comprehensive framework
for web application security testing. Here’s an overview and some essential points for
conducting OWASP web application testing:
Introduction to OWASP Web Application Testing
OWASP is a non-profit organization focused on improving the security of software. The
OWASP Testing Guide is a key resource for understanding how to test web applications
for security vulnerabilities.
OWASP Top 10 Vulnerabilities
OWASP periodically publishes a list of the top 10 most critical web application security
risks. Here’s a summary of the OWASP Top 10, which should be the primary focus
during web application testing:
1. Injection: SQL, NoSQL, OS, and LDAP injection vulnerabilities.
2. Broken Authentication: Issues with authentication and session management.
3. Sensitive Data Exposure: Inadequate protection of sensitive data.
4. XML External Entities (XXE): Vulnerabilities related to XML processing.
5. Broken Access Control: Flaws in access control mechanisms.
6. Security Misconfiguration: Incorrectly configured security settings.
7. Cross-Site Scripting (XSS): Injection of malicious scripts.
8. Insecure Deserialization: Risks associated with deserializing untrusted data.
9. Using Components with Known Vulnerabilities: Dependence on vulnerable
components.
10. Insufficient Logging and Monitoring: Inadequate logging and monitoring
mechanisms.
, The OWASP Top 10 is a list of the top 10 most critical web application security risks
identified by the Open Web Application Security Project (OWASP).
1. Injection: Injection flaws, such as SQL, NoSQL, OS, and LDAP injection, occur
when untrusted data is sent to an interpreter as part of a command or query. This
can result in unauthorized access, data loss, or complete host takeover.
2. Broken Authentication: This includes issues such as improper authentication
mechanisms, weak passwords, and session management vulnerabilities that can
allow attackers to compromise user accounts and gain unauthorized access.
3. Sensitive Data Exposure: Applications that fail to properly protect sensitive data
(e.g., financial information, credentials) through encryption, hashing, or adequate
access controls are vulnerable to exposure and theft.
4. XML External Entities (XXE): XXE vulnerabilities arise when an application
processes XML input that contains external entity references in an unsafe
manner. Attackers can exploit this to disclose confidential data, execute remote
code, or perform server-side request forgery (SSRF) attacks.
5. Broken Access Control: Inadequate access control mechanisms can allow
unauthorized users to access functionality or data, such as administrative
functions, sensitive files, or other users' data.
6. Security Misconfiguration: Security misconfigurations, such as default
configurations, unnecessary features enabled, or missing patches, can expose
vulnerabilities that attackers can exploit to gain unauthorized access or disrupt
services.
7. Cross-Site Scripting (XSS): XSS vulnerabilities occur when an application
includes untrusted data in a web page without proper validation or escaping.
Attackers can use XSS to execute malicious scripts in users' browsers, steal
session cookies, or deface websites.
8. Insecure Deserialization: Insecure deserialization vulnerabilities can lead to
remote code execution or privilege escalation. Attackers can manipulate
serialized objects to execute arbitrary code or perform denial-of-service (DoS)
attacks.
9. Using Components with Known Vulnerabilities: Using outdated or vulnerable
components, such as libraries, frameworks, or plugins, can expose applications
to known security flaws that attackers can exploit.
10. Insufficient Logging & Monitoring: Inadequate logging and monitoring make it
difficult to detect and respond to security incidents, such as attacks or
unauthorized access attempts, in a timely manner.
